the most common type of hair loss caused by genetic predisposition to lose hair at the front, central, and crown portions of the head. It is usually progressive in nature.

The most common type of hair loss that is caused by hormones, genes and age, and is usually progressive in nature. It affects the central and frontal area of the scalp and often results in a pronounced U-Shape configuration.

The natural occurrence of hair loss in men.

An inherited condition in men which is triggered by the hormone Dihydrotestosterone which causes gradual miniaturization (and eventual loss) of hair follicles. Starting anytime after puberty with a recession of the hairline and thinning of the crown areas, it can eventually lead to complete baldness at the top of the scalp. The areas around the sides and back of the scalp are not typically affected by male pattern baldness.

Androgenetic alopecia (AGA) is also known as male pattern baldness and is the most common cause of hair loss. Approximately 50% of men are affected by the age of 50 and 20 to 53% of women are affected by the age of 50. For more info: male pattern baldness